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A bit more generic actionable advice, it is pretty much garanteed that something will contained PFAS if : - It is _waterproof_ and not made from animal/vegetab

A bit more generic actionable advice, it is pretty much garanteed that something will contained PFAS if : - It is _waterproof_ and not made from animal/vegetable fat. - It is _lubricant_ and not made from animal/vegetable fat. Waterproof jackets, bicycle gear lubricants, waterproof coatings in food containers, etc. etc.

prox 4y ago
How do you spot waterproof coating in a food container?
- DoingIsLearning 4y ago
  Thinking of cardboard/paper containers, if you take normal cardboard and put water in it, it will be a very short time before it seeps through and gets soggy. Take your container and do the same? If there is a significant difference it has been waterproofed. Now specifically on coatings there are beeswax coatings and silicone coatings which judging from other food grade/medical grade applications would be fairly safe. The snag is that on a visual inspection (at least for me) I have no way of telling if a coating is just silicone or contains PFAS. So in general I would apply a cautionary principle and just stay away from them at takeout joints.
  - forum_ghost 4y ago
    Silicone (siloxane) coatings isn't that big of a deal. It's just a different type of glass, fairly inert, fairly safe. It's also extremely unlikely that takeout joints have silicone-coated paper, as it is fairly expensive. "Parchment" paper you buy today is actually coated with Teflon-related fluoridated compounds. Just burn some of the paper, and see if the smell resembles the smell of an empty teflon pan that's overheated until it's giving off scent/smoke.
hgomersall 4y ago
Lots of paper packaging of this sort claims to be biodegradable. Lack of PFAS seems to me to be a necessary condition for something to be biodegradable, but I've been wondering... As an aside, Nikwax (https://www.nikwax.com/ https://www.nikwax.com/) make excellent waterproofing products for outdoor equipment and have been PFC free as long as I can remember (probably since inception).
- forum_ghost 4y ago
  >Lack of PFAS seems to me to be a necessary condition for something to be biodegradable That's not the case at all. PLA doesn't even decompose much in normal conditions, outside of 60C+ compost piles. It is sold as a bio-degradable plastic.
  - Teever 4y ago
    at what temperature do organisms break down these PFAS chemicals?
forum_ghost 4y ago
lithium grease is PFAS?
elevaet 4y ago
> not made from animal/vegetable fat. Hmm off the top of my head there are many lubricants that are neither PFAS nor animal/vegetable fat, made out of petrochemicals/hydrocarbons: engine oil, petroleum jelly, mineral oil...
- elevaet 4y ago
  ..also graphite based lubricants

prox 4y ago

How do you spot waterproof coating in a food container?

DoingIsLearning 4y ago
Thinking of cardboard/paper containers, if you take normal cardboard and put water in it, it will be a very short time before it seeps through and gets soggy. Take your container and do the same? If there is a significant difference it has been waterproofed. Now specifically on coatings there are beeswax coatings and silicone coatings which judging from other food grade/medical grade applications would be fairly safe. The snag is that on a visual inspection (at least for me) I have no way of telling if a coating is just silicone or contains PFAS. So in general I would apply a cautionary principle and just stay away from them at takeout joints.
- forum_ghost 4y ago
  Silicone (siloxane) coatings isn't that big of a deal. It's just a different type of glass, fairly inert, fairly safe. It's also extremely unlikely that takeout joints have silicone-coated paper, as it is fairly expensive. "Parchment" paper you buy today is actually coated with Teflon-related fluoridated compounds. Just burn some of the paper, and see if the smell resembles the smell of an empty teflon pan that's overheated until it's giving off scent/smoke.

hgomersall 4y ago

Lots of paper packaging of this sort claims to be biodegradable. Lack of PFAS seems to me to be a necessary condition for something to be biodegradable, but I've been wondering... As an aside, Nikwax (https://www.nikwax.com/ https://www.nikwax.com/) make excellent waterproofing products for outdoor equipment and have been PFC free as long as I can remember (probably since inception).

forum_ghost 4y ago
>Lack of PFAS seems to me to be a necessary condition for something to be biodegradable That's not the case at all. PLA doesn't even decompose much in normal conditions, outside of 60C+ compost piles. It is sold as a bio-degradable plastic.
- Teever 4y ago
  at what temperature do organisms break down these PFAS chemicals?

forum_ghost 4y ago

lithium grease is PFAS?

elevaet 4y ago

> not made from animal/vegetable fat. Hmm off the top of my head there are many lubricants that are neither PFAS nor animal/vegetable fat, made out of petrochemicals/hydrocarbons: engine oil, petroleum jelly, mineral oil...

elevaet 4y ago
..also graphite based lubricants